Oil and gas burner mounting



1932. R. H. FORNEY OIL AND GAS BURNER MOUNTING Filed March 22, 1929 2 She s-S Feb. 9, 1932. R, FORNEY 1,844,315

OIL AND GAS BURNER MOUNTING Filed March 22', 1929 2 Sheets-Sheet 2 Patented Feb. 9, 1932 UNITED STATES PATENT OFFICE BOSS H. BY, 01 DALLAS, TEXAS, ASSIGNOR TO FORNEY COMBUSTION ENGINEERING 8 COMPANY, 01

DALLAS, TEXAS, A CORPORATION OF TEX.A

OIL AND GAS BURNER MOUNTING Application filed larch 22, 1929. Serial No. 849,187.

This invention relates to new and useful improvements in oil and gas burner mountmgs.

"Where 'gas, particularly natural gas, is

used as a fuel for industrial boilers, unexpected breaks in the supply main frequently occur without warning. it is highly desirable to have a substitute or auxiliary fuel ready for immediate use and application. It is obvious that if the change from gas to the substitute fuel can be expeditiously made very little drop in the steam pressure will occur.

One object of the invention is to produce an improved burner of thev type set forth so arranged and constructed as to provide for a very quick change or shift from gas fuel to a substitute fuel and vice versa.

important object of the invention is to provide a burner structure wherein it is merely necessary to substitute fuel tubes and disconnect and connect the same in order to change over from one fuel to another, the major portion of the burner structure being unchanged.

A further object of the invention is to provide a burner assembly ready for installation in the wall of the boiler furnace and including certain new and useful features involving air supply and draft control and flame spreading and regulation.

further object of the invention is to provide a supporting sleeve adjustably mounted in the head of the burner box in which the fuel tube is mounted and also upon which the damper is adjustably carried; the sleeve also carrying the deflector, thus making for a substantial, simple and compact structure.

' Another object of the invention is to provide interchangeable connections, whereby gas or oil, or oil and steam, may be employed as fuels and the change over from one to the other expeditiously made.

[5 Further reference will be made herein to the foregoing and other features of the invention which will be more particularly pointed out.

In the following specification an exem- 0 plification of the invention is set forth and In such instances this is illustrated in the accompanying drawings in which:

Fig. 1 is a vertical sectional view of a burner constructed in accordance with the invention and showing the gas tube in position,

Fig. 2 is a front elevation of the same,

ig. 3 is a plan view of the coupling bracket on the front of the burner,

Fig. 4 is an enlarged view partly in elevation and partly in section, showing the supporting shell and component parts with the gas tube in place,

Fig. 5 is a similar view showing the oil tube in place, 5 ig. 6 is asimilar view showing the oil and steam tube mounted in the sleeve, and

Fig. 7 is a partial plan view of the latter.

In the drawings the numeral 10designates a metal box or barrel, cylindrical at its rear or outer end and frusto-conical at its inner or front end from which the flame is projected. The barrel is designed to be partly embedded in the furnace wall A with its rear end protruding and its front end terminating within the wall. The frusto-conical portion of the barrel. causes a concentration of the currents and these are discharged through a bell or outwardly flared lip' 11 at the front end of the barrel.

The wall A of the furnace wall has a flared or frusto-conical portB flush with the bell and consequently the heated currents which are concentrated in the conical portion of the barrehare expanded and spread when 5 passing through the bell and port. This arrangement makes for a thorough mixing of the air and gas currents as well as for an ample and hot flame.

In the rear end of the barrel is fitted the circular flange 12 of a circular head 13. The flange has internal lugs 14 registering with cars 15 within the barrel. Bolts 16 passing through the parts 13, 14 and 15, respectively, serve to securely fasten the head in the rear end of the barrel. The head has an axial collar 17 projecting on both sides thereof and around the collaris a comparatively large air-admitting opening 18.

An elongated fuel sleeve 19 forming part 100 barrel may be fastened the outer or rear end of the sleeve is collar 21 of a yoke-shaped bracket 22. The

bracket is fastened in a horizontal position by a set screw 23 engaging the sleeve.

One arm of the bracket has an ear 24, while the other arm of said bracket has a smaller car 25. A pipe nipple 26 is mounted in the ear 24 and is screwed into an elbow 27 at one end and has a union 28 mounted on its other end on the opposite side of the ear. The elbow is suitably secured to the end of a flexible conduit or hose 29 through which gas is supplied from a suitable source.

An elongated nipple 30 is mounted in the ear 25 and is suitably attached at its outer end to a flexible conduit or hose 31 through which oil or other substitute fuel is supplied. On the inner end of the nipple is mounted a union 32. One of the principal features of the invention is the quick change over from one fuel to another and the mounting of the fuel supply conductors in the bracket equipped with unions contiguous to the entrance to the fuel sleeve 19, makes for an expeditious carrying out of this feature.

When gas is being used as a fuel, an elongated fuel tube 33 is telescoped into the sleeve 19. The tube has a snug fit, butis loose enough to be slid freely in the sleeve. An elbow 34 (Figs. 2 and 3) is screwed onto the outer end of the tube and is positioned within the bracket 22. This elbow has external screw threads for receiving the nut of the union 28. Thus to disconnect the gas hook-up it is merely necessary to unscrew the nut of the union 28, grasp the elbow 34 and withdraw the gas tube 33 from the sleeve 19.

The gas fuel burner assembly is shown in Fig. 4 in detail. On the inner or front end of the sleeve 19 is mounted a deflector 35 which includes a collar 36 encircling the end of the sleeve and fastened thereon by a set screw 37. The collar supports a flared spreader stem 38 which carries at its outer flared end a surrounding spreader 39. The spreader is flared from the stem and at a much wider angle to the tube 33 than stem.

The tube is internally screw-threaded to receive the reduced threaded end 40 of a burner tip 41 having its outer surface flush with the tube to facilitate sliding through the sleeve 19. The tip 41 has an integral cap 42 at its outer or front end and an inclined annular burner face 43 uniting the cap and body' of the tip. Radial gas ports 44 discharge through the face 43 so as to spread the flame.

The stem 38 has air openings 45 for admitting air around the tip 41. The tip projects from the deflector forwardly of the spreader 39. The spreader has upset vanes 46 bent toward the front side thereof and these act to admit air tangentially and impart a whirling or circular motion thereto, whereby combustion is promoted and a more intense flame is produced.

The deflector 35 is located in the barrel 10 in advance of the frusto-conical end thereof so that the gaseous currents, resulting from the admixture of air and gas, are deflected by the spreader 39 and directed through the bell 11. The draft currents are concentrated in the frusto-conical end of the barrel and mixed with the gaseous currents projected from the burner, thus causing the flame to spread through the bell 11 and frusto-conical port B into the fire box. This results in a maximum combustion and a hot flame of high heat potentiality.

For controlling supply through the opening 13, a frusto-conical damper mounted on the sleeve 19. The damper has an axial collar 48 snugly surrounding the sleeve and carrying a set screw 49 engaging said sleeve to fasten the damper in adjusted positions. The damper has a circular lip 50 of such diameter as to register with and engage a complementary flange 51 on the outer face of the head 13, when the damper is slid up to the head. I I

Ordinarily the damper is spaced from the head as is shown in Fig. 1 and a generous supply of air is admitted to the opening 18.

the draft currents and air 18 of the head 47 is slidably The damper has a peep hole 52 normally closed by a cover 53 which may be swung to one side to open the hole. A shield 54 within the damper is spaced therefrom.

When the gas supply is suddenly interrupted, as by a break in the main which is quite common in natural gas territories, it is desirable to quickly change to a substitute fuel. If this change can be quickly made very little drop will occur in the steam pressure. As hereinbefore stated, by disconnecting the union 28 the gas tube 33 is uncoupled and may be readily withdrawn from the sleeve 19. An oil fuel tube 55 is easily inserted in the sleeve and a plugged T 56 on its outer end is quickly coupled to the union 32; then by opening the oil line 31 the change over is completed.

In order to center the oil tube in the sleeve 19, spiders 57 are fastened on said tube as is shown in Fig. 5. The oil tube has an oil burning tip 58 on its inner end and this tip is positioned within the end of the sleeve 19 so as to atomize the oil in a fine spray into the stem 38 of the deflectorl The specific structure of the oil tip may vary as conditions may require.

When it is desired to change over from gas to oil and steam the assembly shown in Figs. 6 and 7 is used. In this assembly the oil tube 59 is concentrically supported in a steam tube 60 which is concentrically supported the sleeve 19 by spiders 61.

plugged head 62 is screwed onto the outer end th of the steam tube and the head is divided into chambers 63 and 64 by a central web 65. The oil tube extends through the chamr 63 and is screwed into the web 65. In this assembly the arm 22' of the bracket 22 besides having the ear 25 has an eye 25. he compartments 63 and 64 have spuds 63 into their sides as is shown and 64' screwed in Fig. 7. The union 32 is screwed onto the line 31; while spud 63 to connect the oil a union 66 is screwed onto the spud 64 to connect the steam hose 67. 4 A steam nozzle 68 is screwed into the inner or front end of the steam tube 60 and this nozzle has an extension 68 which receives the front or inner end of the oil tube 59. The extension receives concentrically within the nozzle 68 an oil nozzle 70, there being a steam passage 7 0' extending through the nozzle 68. frusto-conical spreader telescoping into the nozzle 68 is supported therein on the oil nozzle 70. The nozzle 70 has an enlarged head 72 bevelled to the flare of the spreader. Ports 71 in the neck of the nozzle 70 discharge oil which is atomized between the spreader and the head and commingled with t e steam.

It is pointed out that the spread in a cone end of the barrel 10 into a cone having its apex in the fire box. This causes a crossing of the cones, whereby the air and gas currents are thoroughly mixed and a wide spread conical flame is produced which is of great efficiency and highly desirable.

arious changes in the size and shape of the different parts, as well as modifications and alterations, may be made within the scope of the appended claims.

What I claim, is:

1. In a fuel burner mounting, a support for mounting at the wall of a fire box, a sleeve carried by the support, a deflector open to outside air and carried on the inner end of the sleeve, a fuel tube slidable in and quickly removable from the sleeve and having a burner tip on its inner end co-acting with the deflector to produce a flame, a bracket fastened on the outer end of the sleeve, a nipple mounted in the bracket for connecting to a fuel supply conductor, and a coupling on the nipp for connection with the outer end of the tube.

2. In a fuel burner mounting, a barrel for mounting in the wall of a fire box, a head on the outer end of the barrel having an air opening, a sleeve slidably supported in the head and extending into the barrel, a deflector mounted on the sleeve within the barrel and having openings for admitting air directly from the barrel, a damper slidable on the sleeve toward and from the barrel, a

fuel tube slidable in the sleeve and removable erefrom, a burner tip on the inner end of the tube co-acting with the deflector, a fuel conductor, and means for quickly coupling the conductor with the outer end of the tube.

11 a gas and oil burner mounting, a supporting sleeve, a deflector mounted on the inner end of the sleeve, a bracket mounted on the outer end of the sleeve, a fuel conductor supported by one member of the bracket and having a coupling,.a-second fuel conductor supported by another member of the bracket and aving a coupling, a flame sleeve and having a burner tip extending beyond the sleeve into the spreader, the fuel tube being engaged with the coupling of one uctors.

of the cond In a gas and oilsupporting sleeve, a deflector mounted'on and having a burner ti front end of the tube being connected with the coupling of one of the fuel conductors.

burner mounting, a support of a fire box, a

end of the sleeve, a fuel tube inserted in said sleeve and fuel conductors carried by the opposite members of the bracket each coupling for connection with said 6. In a f for mounting at the wall of a fire box, a sleeve slidable in said support, a fuel tube freely movable in said sleeve, a bracket mounted on the outer end of the sleeve, fuel conductors tors and their sources sleeve may be slid.

In a fuel burner mounting, a barrel for mounting in the wall of a fi mounted at the outer end of the aving a draft opening, an elongated sleeve slidable axially through the head, conical spreader mounted on the inner end of the sleeve within the freely movable in said sleeve, a frusto-conical damper slidable on the sleeve toward and from the head, and a yoke-shaped bracket mounted on the outer end of the sleeve for carrying fuel conductors.

8. In a fuel burner mounting, a support, asleeve mounted in the support, a fuel tube slidable in the sleeve, and a flame spreader having a of the spreader including a collar secured on the inner end of the sleeve and a stem flaring from the collar having a flared spreader member surrounding the inner end Of the stem, the stem having air openings, an the flared member having upset deflector vanes, the flared member of the spreader being disposed at a wider angle than the stem of the spreader.

In testimony whereof I aflix ROSS H.

my signature.

FORNEY. 

